JPS5872438A - Molding device for radial tire - Google Patents

Abstract

PURPOSE:To manufacture the tire with excellent working property and economical efficiency by directly carrying a green carcass to a secondary molding machine from a primary molding machine by using a travelling truck. CONSTITUTION:(i) A tire band T fitted to the drum 5 of the primary molding machine 1 is molded to the green carcass G by means of push rings 10 and turn-up bladders 11, and a tail stock 8 is separated and retreated. (ii) The carcass G is grasped through the holding means of the lifting frame 41 of the truck 3 (numerals 20 are cross beams and 27 are horizontal sliding frames) for carrying, which can be moved along over-rails 4, 4, and the carcass is carried to the predetermined position (displayed in a two-dot chain line) of the secondary molding machine 2 by means of the truck 3. (iii) Flanges 16, 16 are fitted to the bead sections Ga, Ga of the carcass G in an airtight manner, a belt held by means of a ring 19 for carrying is disposed to the outer circumference of the carcass G, the carcass G is deformed in toroidal form and pressure-welded and joined with the inner surface of the belt, and a green tire is shaped, and the tire is forwarded to a vulcanization process.

Description

[Detailed description of the invention] The present invention relates to a radial tire forming apparatus.

Molding of radial tires for automobiles involves primary forming, in which bead wires are stuck endlessly on both sides of a tire band obtained by laminating multiple ply cords in an endless manner, and this process.
The Glinker canoe obtained by the subsequent molding is expanded and deformed from a cylindrical shape to a toroidal shape, and a belt, tread cap, and sidewall are attached to the outer periphery of the Glinker canu.

・ However, in the conventional molding operation described above, - the secondary forming and the secondary forming are performed by a primary forming machine and a secondary forming machine which are independent from each other, and - the green carcass formed by the secondary forming machine is connected to the primary forming machine. Since the green carcass was temporarily stored between the secondary forming machine and transported to the secondary forming machine as needed, a large space and storage equipment were required to store the green carcass. As time progressed, it became necessary to unload the cargo at the green carcass storage area.

This invention enables the following molding and secondary molding to be performed continuously by directly connecting the secondary molding machine and the secondary molding machine with a green carcass conveying means, and the storage space and storage space for the green carcass are This eliminates the need for equipment and greatly reduces the number of man-hours required for transporting the equipment.

That is, this invention arranges a radial tire primary forming machine and a secondary forming machine so that their main axes are parallel to each other,
A pair of left and right overrails is installed above the primary molding machine and the secondary molding machine, spanning them at right angles, and a horizontal slide that can freely slide in the direction of the main shaft is mounted on a running cart mounted on the overrails. A movable frame is provided, and a clamping means for clamping the green carcass formed by the above-mentioned primary forming machine in contact with the circumferential surface is attached to the lower part of the vertically suspended vertically movable frame from the horizontal sliding frame. This is a radial tire molding device characterized by the following.

Embodiments of the invention will be described below with reference to the drawings.

In Figure 1, 1 is a primary molding machine, 2 is a secondary molding machine, and 3
is a running trolley for conveying the green carcass. - The secondary forming machine 1 and the secondary forming machine 2 are each installed on the floor, and the running trolley 3 is a running trolley for transporting the green carcass. It is designed to run along overlay #4.

The molding drum 5 of the primary molding machine 1 is constructed of a plurality of segments so that its diameter can be enlarged or reduced, and is attached to the main shaft 7 of the headstock 6 and rotated. The tip of the main shaft 7 protrudes to the left of the molding drum 5, and a hollow shaft 9 slidable left and right attached to the protruding end 7a is attached to the left tail stock 8.
is detachably connected. The above tail stock 8 is
It has a support shaft 8a parallel to the hollow shaft 9, and is formed to be able to swing freely between the operating position shown in the figure and the standby position above (hand on the paper), and when the tailstock 8 is in the standby position, it is A space is formed below the rail 4 on the left side of the drum 5. Therefore, the headstock 6 and tailstock 8 are equipped with a known bushing ring 10.10.
and turn-up bluffs 11, 11, etc. are provided so as to be slidable in the left and right directions. Note that 12 is a stitcher frame including a side stitcher and a tread stitcher.

The secondary forming machine 2 has a main shaft 14 that is attached to a left head stock 13 and is slidable in the left-right direction, and a right tail stock (not shown) that is attached to a VC and that rotates in synchronization with the main shaft 14. It has a tail stock shaft 15 that rotates and is slidable in opposite directions, and the left and right bead portions Ga%Ga of the Glinker canoe G are held airtight at the tips of the main shaft 14 and the tail stock shaft 15, respectively. A flange 16.16 is fixed for this purpose. This secondary molding machine 2 is configured such that the main shaft 14 and the tailstock shaft 15 are parallel to the main shaft 7 of the primary molding machine 1.
And the center between the left and right flanges 16.16 is the primary forming machine 1
It is arranged so as to face the tailstock side bushing ring lO in the operating position.

A belt forming drum 18 whose diameter can be enlarged or reduced is fixed to the sleeve 17 which is rotatably fitted on the tail stock shaft 15, and the center between the left and right flanges 16 and 16 is connected to the belt forming drum. A belt conveying ring 19 having a plurality of segment-shaped holders pressed against the outer periphery of the belt is disposed between the tail stock shaft 1 and the tail stock shaft 1.
5 and is provided so as to be slidable in the left and right direction.

The overrail 4.4 is formed to have a T-shaped cross section (see Fig. 2), and extends above the secondary forming machine 1 and the secondary forming machine 2 so as to straddle these main shafts 7.14 at right angles, and 4.4-H The right half of the running cart 3 can pass above the forming drum 5 of the primary forming machine 1, and the left half can pass above the flange 16.16 of the secondary forming machine 2. It will be erected.

As shown in FIGS. 2 and 3, the above-mentioned traveling bogie 3 has two long transverse beams 20.20 in a direction perpendicular to the overlay /L/4.4, and one long transverse beam 20.20. It is formed into a rectangular frame shape with connecting plates 21 and 22 connecting the left and right upper surfaces, respectively, and is positioned on both sides of the overrail 4 and 40 on the upper surfaces of the connecting plates 21 and 22, respectively. A beam-shaped bracket 23 is fixed in parallel with 4, and this beam-shaped bracket 230
A total of 8 wheels 24 attached to the front and rear are overlay / 1 /
It is mounted on the lower flange of 4.4 so that it can be moved freely.

Grooved guide rails 25.25 are fixed to the lower surfaces of the two front and rear transverse beams 20.20 of the traveling bogie 3, and a total of four guide rails 25.25 are attached to the guide rails /I/25.25 on the front, rear, left and right sides. A horizontal sliding frame 27 is slidably suspended via the sliding block 26 . This horizontal sliding frame 27 is formed by connecting a rectangular upper plate 28 and a lower plate 29 with hollow guide columns 30 located at the four corners thereof. On the other hand, plate-shaped sprocket brackets 31, 31 and 32.
32 is fixed, and a sprocket shaft 33 is rotatably supported by these brackets 31.31 and 32.32.
and sprockets at both ends of 34) 33a,
33a, 34a, 34a are fixed, and both ends of a roller chain 35.35 wound around these sprockets 33a, 33a, 34a, 34a are connected to the upper plate 2 of the horizontal sliding frame 27 via respective stoppers 36.36.
8. The sprocket shaft 33 on the left side of FIG. 2 is rotated forward and backward by the motor 38 on the connecting plate 21 via the driving sprocket 33b1 on the sprocket shaft 33, the endless chain 37, and the motor sprocket 38a. .

A fluid cylinder 39 is fixed in the center of the horizontal sliding frame 27 with its piston rod 39a facing downward, and guide rods 40 are slidably inserted into the guide columns 30 at the four corners, respectively. An upper plate 41 a of the elevating frame 41 is circumferentially provided at the lower end and the lower end of the guide rod 40 . This elevating frame 41 is provided with a lower plate 41t)'i slightly below the upper plate 41a, and a motor '42 is fixed to the upper surface of this lower plate 41b. A threaded shaft 44 is transmitted from 42 through a chain transmission mechanism 43, and has a left-handed threaded portion 44a on one end and a right-handed threaded portion 44b on the other end, and two non-rotatable threaded shafts located on both sides of the threaded shaft 440. guide rod 45
．． 45 are supported in parallel with the above-mentioned overlay lv4.4. Then, the left threaded portion 44a and the right threaded portion 44'b of the threaded shaft 44 are respectively screwed.
46 and 46 are screwed together and the two guide rods 4
Sliding blocks 47.47 are slidably fitted to both ends of 5.45, respectively, and two sliding plates 48.48 are located below both ends of the screw shaft 44 and guide rods 45, 45. The nut 46 and the sliding blocks 47, 47 are fixed to the upper surface of each of the screw shafts 44, so that the two front and rear sliding plates 48, 48 slide in opposite directions as the screw shaft 44 rotates forward and backward. It has become.

Sliding arms 49.49 are provided at both left and right ends of the above-mentioned sliding plate 48.
is fixed downward, and both ends of a clamping plate 50 for clamping the green carcass G are fixed to the upper part of this sliding arm 49, 49 at an inclination angle of about 45 degrees with respect to the horizontal plane (
(See Figure 4). In addition, inward protrusions 49 are provided near the ends of the sliding plates 4 and 8 and on the lower band of the sliding arm 49.
vertical guide holes are bored in each of a, and the lifting rod 51 is inserted into these guide holes so as to be vertically slidable;
A stopper Ft fixed to the center of this lifting rod 51
A coil spring 52 is compressed between the protrusion 49a of the sliding arm 49 and the lifting rod 51 is urged upward, and the roller 53 attached to the upper end of the lifting rod 51 is moved under the lifting frame 41. It is pressed into contact with a plate cam 54 fixed to the lower surface of the plate 41b. On the other hand, the upper end of a short link 55 is connected with a pin to the lower end of the lifting rod 51.
5 and the upper end of a swinging lever 57 attached to the lower end of the sliding arm 49 by a support shaft 56 are connected by a pin, and the threaded shaft 44 rotates forward to move the front and rear sliding plates 48, 48. When the two move toward each other, the lifting rod 51 is pushed down against the elasticity of the coil spring 52, and the swinging lever 57 is rotated from the vertically downward position to the inclined position shown in the figure.

Both ends of a clamping plate 58 similar to the aforementioned clamping plate 50 are fixed to the left and right swinging levers 57.57, and when the front and rear sliding plates 48.48 approach each other, the four clamping plates 50
．． 50.58.58 are brought into contact with the surfaces of the green carcass G.

In the above structure, when the tire band T is fitted onto the forming drum 5 of the next forming machine 1 and the green carcass G is formed by the operation of the bushing ring lO and the turn-up plader 11, the hollow shaft of the tail stock 8 9 is separated from the main shaft 7, and then the tail stock 8 is rotated upward (toward the front side of the paper in FIG. 1) about the support shaft 8a and moved to the standby position. At this time, the traveling carriage 3 is waiting between the primary forming machine 1 and the secondary forming machine 2, as shown in FIG. 1, and the horizontal sliding frame 27 below the traveling carriage 3 is As shown by the two-dot chain line in FIG. 50.50.58.58 is opened. This traveling trolley 3 is connected to the primary forming machine 1 as described above.
After the tail stock 8 is moved to the standby position, it moves toward the secondary molding machine 1 and stops above the extension line of the main shaft 7 of the primary molding machine 1. After that, the horizontal sliding frame 27 slides to the right and stops above the forming drum 5, and then the elevator frame 4
1 is lowered and the said lowering stops when the clamping plates 50, 160 and 58, 58 reach the height of the green carcass G on the main shaft 7. When the lifting plate 51 stops, the front and rear sliding arms 49.49 slide in the proximal direction by the drive of the screw shaft 44, and the clamping plates 50.50, 58.58 come into contact with the surface of the Grinker force of 7.0. Ru. and - next molding machine l
The diameter of the forming drum 5 is reduced, and the horizontal sliding frame 27 slides to the left, whereby the green carcass G is extracted from the forming drum 5.

When the green carcass G is transferred from the forming drum 5 to the lifting p41 of the traveling trolley 3, the lifting frame 41 rises to the upper end of the guide rod 40, and the horizontal sliding frame 27 moves to the guide rail/
After moving to the left end of l/25, the traveling trolley 3 travels along the overrail 4 to above the secondary forming machine 2 and stops. At this time, the left and right flanges 16.1 of the secondary forming machine 2
6 is opened left and right as shown in FIG. When the traveling trolley 3 stops as described above, the elevating frame 41
is lowered, and when the center line of the green carcass G held by this elevating frame 41 reaches the height of the main shaft 14 of the secondary forming machine 2, the above-mentioned lowering stops. Thereafter, the left and right flanges 16.16 are pushed out toward the center, and the bead portions Ga and G of the green carcass G are pushed out as shown by the two-dot chain line in FIG.
, a near the flange αQ1α is fitted in an airtight manner. Then, when the screw shaft 44 of the lifting frame 41 is reversed and the four clamping plates 50, 50, 58, 58 are opened, the lifting frame 4
1 rises, and the traveling carriage 3 returns to the standby position shown in FIG.

On the other hand, on the belt forming drum 18 of the secondary forming machine 2, a belt material and a tread cap (all shown) are laminated in advance and pasted together in an endless manner. When the green carcass G is installed, the belt conveyor ring 19 slides to the right and holds the belt and tread cap on the belt forming drum 18, and after the diameter of the forming drum 18 is reduced, The belt conveying ring 19 slides to the left and stops at a position where its center coincides with the green carcass G of the flange 16.16. Next, compressed air is introduced into the space surrounded by the green carcass G and the flange 16.16, and at the same time, the left and right flanges 16.16 are brought symmetrically close to each other, so that the green carcass G becomes cylindrical. The green tire is then deformed into a toroidal shape, and the top portion thereof is pressed against the inner surface of the belt held by the belt conveying ring J9 to obtain a green tire. This green tire is removed from the flange 16, 16 after the belt conveyor ring 19 has been returned to the illustrated standby position and sent to the vulcanizer.

In the above embodiment, as shown in FIG. A swingably connected sliding rod 59 is slidably inserted into a guide hole of a guide protrusion 49'b protruding from the side surface of the sliding arm 49, and a spring 60 is applied to the holding plate 50A'. The front and rear sliding arms 49 and 49 come close to each other, and the above-mentioned clamping plate 50A is pressed against the linker canu G, and the clamping plate 50A is pressed against the spring 6.
The limit switch 61 has the clamping plate 50A fixed to the sliding arm 49 when rotated against the elastic force of 0.
is pressed, thereby stopping the rotation of the screw shaft 44. In addition, the primary forming 41 of the above embodiment
! 1, the tail stock 8 rotates upward and stands by, but it can also slide in the opposite direction to the secondary forming machine 2 or on the axis to the opposite side of the forming drum 5 and stand by. good. Moreover, instead of providing the belt forming drum 18 and the belt conveying ring 19, the secondary forming machine 2 expands and deforms the green carcass G into a toroidal shape, and then directly laminates the belt material and tread cap on top of the green carcass G. It is also possible to make it look like this. Further, the horizontal sliding frame 27 of the traveling truck 3 may be provided with rollers that move along the horizontal beam 20. Further, the elevating frame 41 can be raised and lowered using a rack and pinion, a hoisting device, or the like.

Furthermore, the sliding arm 49 can be slid by the fluid cylinder 1, a pinion and the like. It goes without saying that the series of operations from when the traveling trolley 3 departs from the standby position to when it returns to the standby position can be performed automatically.

As explained above, the present invention is: - A secondary molding machine and a secondary molding machine are directly connected by means of conveying the green carcass, and - The fire-formed green carcass is directly conveyed to the secondary molding machine for secondary molding. Since subsequent molding can be carried out, there is no need for storage space or storage equipment for the green carcass, and the number of man-hours required for loading and unloading the green carcass is greatly reduced.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view of the green carcass conveying means, FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. FIG. 5, which is an enlarged view of the main part, is a side view of a modification of the green carcass holding means. primary forming machine, 2: secondary forming machine, 3: traveling truck, 4: over rail, 5: forming drum, 7.14: main shaft, 16
: Flushage, 27: Horizontal sliding frame, 41: Lifting frame, 49:
Sliding arm (clamping means), 50.58: Clamping plate (clamping means), G Nigurin carcass. Figure 1 Figure 4 Figure 5

Claims (1)

[Scope of Claims] [1] A primary forming machine and a secondary forming machine for a radial tire are arranged so that their main axes are parallel to each other, and these are arranged above the primary forming machine and the secondary forming machine at right angles. A pair of overrails on the left and right sides will be erected. A horizontal sliding frame (9) that can be slid freely in the direction of the main axis is provided on the traveling carriage' placed on the overrail, and the above-mentioned primary molding is applied to the lower part of the lifting frame that is suspended from the horizontal sliding frame so as to be able to rise and fall freely. A radial tire forming device characterized by being equipped with a holding means for holding the green carcass formed by the machine in contact with the surface of the green carcass. [2] - The tail stock of the secondary forming machine is formed so as to be able to stand by outside the axis of the main shaft, and the bead holding flanges on the headstock side and the tailstock side of the secondary forming machine are formed so as to be slidable in mutually opposite directions. Claim 1
The radial tire forming apparatus described in . [3] The holding means includes downward sliding arms that are provided on the lower surface of the lifting frame so as to be slidable in opposite directions parallel to the overrail, and attached to the upper and lower parts of the sliding arms. A radial tire forming apparatus according to claim 1 or 2, comprising a plurality of holding plates. [4] The lower clamping plate has an upper edge connected to the lower end of the sliding arm in a hinge-like manner, and is bent so that it can be swung inward from a downward position. radial tire forming equipment. [5]□6 holding plate,,□□7? - For inside the Yotsu factory. Claim 1, wherein the sliding arms are biased and installed, and when the front and rear sliding arms approach each other, the upper clamping plate contacts the green carcass, thereby stopping the sliding arms from approaching each other. The radial tire forming apparatus according to item 3 or 4.